DN3D: Nukem to the Grave is an upcoming 4 episode ghost-themed campaign. Duke will travel from a castle, to a smelly green temple, hell, and a rift in time and space. The aliens have returned to earth as ghosts, and have secured a haunted castle, and turned it's inhabitant ghosts into pig ghosts. But those alien bastards overlooked one thing- ghosts aren't invincible to bullets and shrapnel. When Duke catches wind of this paranormal alien activity, he heads for the castle to kick their asses straight back to hell.... and then some!
An example of color palette change made for Pig ghosts. When this color is applied to an Assault Trooper, for some reason, the freeze ray seems ineffective and will get you killed trying to fight them with it.